Thermodynamic studies of slow metal exchange processes in ionophoric calix[n]]arenes with a capsule-like closed cavity

Yoshio Suzuki, Hideyuki Otsuka, Atsushi Ikeda, Seiji Shinkai

研究成果: Contribution to journalArticle

12 引用 (Scopus)

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It was found that in a triply-capped calix[6]arene (1) and doubly-bridged calix[8]arene (2a and 2b) with a closed ionophoric cavity the Cs+ complexation occurs very slowly in a human time-scale and can be followed by a conventional spectroscopic method. The unusual behavior has enabled us to determine their kinetic activation parameters for both the forward and the reverse reaction. The results established that being different from the concept believed so far, the Cs+ complexation is heavily governed by the entropy term but not by the enthalpy term.

元の言語英語
ページ(範囲)421-424
ページ数4
ジャーナルTetrahedron Letters
38
発行部数3
DOI
出版物ステータス出版済み - 1 20 1997

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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